Analysis
- max time kernel
7s - max time network
128s - platform
windows10-2004_x64 - resource
win10v2004-20231215-en - resource tags
- submitted
06/01/2024, 01:47
General
- Target acd6a1d56e317e7b5a69567f37eb669a7f7f34afcd37d6e42f14f52e970c6c4c.exe
- Size 1.3MB
- Sample240106-b7qtzaedck
- SHA256 acd6a1d56e317e7b5a69567f37eb669a7f7f34afcd37d6e42f14f52e970c6c4c
Malware Config
Extracted
-
quasar
-
1.4.1
-
Office04
-
10.0.0.245:4782
-
192.168.56.1:4782
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99.247.192.130:4782
-
29fd0c6e-f22f-4381-839b-448094501b48
-
encryption_key
5C428187ECC1B4E662FECE9D197F4BA9623ED285
-
install_name
System.exe
-
log_directory
System Logs
-
reconnect_delay
2000
-
startup_key
System
-
subdirectory
SubDir
Signatures
- Quasar RAT
Quasar is an open source Remote Access Tool.
- Quasar payload 1 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious use of WriteProcessMemory 2 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\acd6a1d56e317e7b5a69567f37eb669a7f7f34afcd37d6e42f14f52e970c6c4c.exe"C:\Users\Admin\AppData\Local\Temp\acd6a1d56e317e7b5a69567f37eb669a7f7f34afcd37d6e42f14f52e970c6c4c.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\RarSFX0\System.exe"C:\Users\Admin\AppData\Local\Temp\RarSFX0\System.exe"2⤵
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C:\Users\Admin\AppData\Roaming\SubDir\System.exe"C:\Users\Admin\AppData\Roaming\SubDir\System.exe"3⤵
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C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "System" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\System.exe" /rl HIGHEST /f4⤵
- Creates scheduled task(s)
-
-
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C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "System" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\System.exe" /rl HIGHEST /f3⤵
- Creates scheduled task(s)
-
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
memory/1148-25-0x00007FFD86810000-0x00007FFD872D1000-memory.dmp
memory/1148-26-0x000000001B550000-0x000000001B560000-memory.dmp
memory/1148-28-0x000000001BC60000-0x000000001BD12000-memory.dmp
memory/1148-27-0x000000001BB50000-0x000000001BBA0000-memory.dmp
memory/1148-29-0x00007FFD86810000-0x00007FFD872D1000-memory.dmp
memory/1148-30-0x000000001B550000-0x000000001B560000-memory.dmp
memory/2948-14-0x0000000000ED0000-0x00000000011F4000-memory.dmp
memory/2948-16-0x000000001BE40000-0x000000001BE50000-memory.dmp
memory/2948-15-0x00007FFD86810000-0x00007FFD872D1000-memory.dmp
memory/2948-24-0x00007FFD86810000-0x00007FFD872D1000-memory.dmp